III. A family of 3, Daddy, Mommy, and Son, want to divide the household chores during this lockdown (marketing, cooking, laundering, dish-washing, and cleaning) between them so that each parent has two tasks and 1 task for the son but the total time they spend on household duties is kept to a minimum. Their efficiencies on these tasks differ, where the time each would need to perform the task is given by Table 2. Table 2: Time Needed per Week Marketing Cooking Laundry Dish-washing Cleaning Son 4.4 hrs 7.7 hrs 4.4 hrs 2.9 hrs 5.5 hrs Mommy 4.5 hrs 7.8 hrs 3.6 hrs 3.2 hrs 5 hrs Daddy 4.9 hrs 7.2 hrs 4.3 hrs 3.1 hrs 6 hrs